baber/WOPTO huggingface dataset:
Patent KR-20130059198-A (KR)
Title: Manufacturing method for humidification induced ball
Inventor: KONG HYUN WOO
IPC: F24F6/04
Filed: 2011-11-28
Abstract: PURPOSE: A ball for inducing humidification of a humidifier filter is provided to use zeolite, activated carbon, pottery clay, loess, and an inorganic antimicrobial agent, thereby improving the humidification efficiency, having antibacterial and disinfective functions, and preventing foul odors. CONSTITUTION: A manufacturing method of a ball for inducing humidification of a humidifier filer comprises the following steps: preparing powder of zeolite, activated carbon, pottery clay and/or loess, an inorganic antimicrobial agent, and silane; mixing and kneading the zeolite, activated carbon, pottery clay and/or loess, an inorganic antimicrobial agent, silane, and water; molding the kneaded mixture with a ball molder to 10-40mm ball; and firing the molded ball with a firing machine at 900-1100deg.C.
Patent KR-20130059951-A (KR)
Title: Polypropylene resin composition, preparation method of the same and resin molded aritcle
Inventor: MA SUNG WON
IPC: C08K7/14
Filed: 2011-11-29
Abstract: PURPOSE: A polypropylene resin composition is provided to obtain high impact strength and tensile strength, to obtain high elasticity and excellent heat resistance, and to minimize deformation after molding. CONSTITUTION: A polypropylene resin composition comprises 50-95wt% of polypropylene resin, 1-30wt% of glass long fiber, and 1-25wt% of phlogopite. The polypropylene resin is a highly crystalline polypropylene resin with a melt index of 30-100g/10minutes(ASTM D1238, 230 deg. C). A manufacturing method of the polypropylene resin composition comprises: a step of melting and extruding a raw material including a master batch containing the polypropylene resin and phlogopite; and a step of impregnating the raw glass long fiber into the raw material.
Patent KR-20130060583-A (KR)
Title: Titanium dioxide-coated inorganic pigment powder mixture and cosmetic composition containing the same
Inventor: PARK SE JUN
IPC: A61K8/19
Filed: 2011-11-30
Abstract: PURPOSE: A titanium dioxide-coated inorganic pigment powder mixture is provided to ensure an optical whitening effect, to express natural and clean skin tone, and to be applied to a cosmetic composition for base makeup. CONSTITUTION: A titanium dioxide-coated inorganic pigment powder mixture is complex powder coated with titanium dioxide of inorganic pigment phase, and contains red complex powder, green complex powder, blue complex powder, and yellow complex powder. The inorganic pigment is selected from a group consisting of mica, synthetic mica, talc, and sericite. The average particle size of the complex powder is 15-40 micrometers. A cosmetic composition contains 5-20 wt% of the titanium dioxide-coated inorganic pigment powder mixture as an active ingredient.
Patent KR-20130060800-A (KR)
Inventor: UM IN CHUL
IPC: A61L27/22
Filed: 2011-11-30
Abstract: PURPOSE: A regenerated silk composition and a production method of the composition are provided to enable an application onto biotechnological materials or other purposes, to offer excellent mechanical strength along with an improved biodegradation degree executing a dissolution process of silk in an optimized condition. CONSTITUTION: A production method of a regenerated silk composition includes the following steps; refined silk is mixed in a metallic salt solution, and the silk is dissolved by maintaining the temperature at 70-90 deg. C for 5-60 minutes; and the solution in which the silk is dissolved passes through a dialysis process with water. Metallic salt is one or more selected from a group composed of calcium chloride, calcium nitrate, lithium bromine, lithium thiocyanate, magnesium nitrate, zinc nitrate, zinc chloride, ammonium thiocyanate, and copper sulfate. The metallic salt solution further includes lower class alcohol with 1-6 carbons. The dialysis process is executed using a cellulose dialysis membrane with a molecular weight ranged from 12,000 to 14,000.
Patent KR-20130061397-A (KR)
Title: Apparatus and method for inputting pattern in portable device
Inventor: KIM JONG SUNG
IPC: G06F3/01
Filed: 2011-12-01
Abstract: PURPOSE: A pattern input device of a portable terminal and a method thereof are provided to extract an input pattern through the recognition of a movement pattern, to reduce the size of the input pattern according to a predetermined pattern reduction rate and then to display the input pattern on a display panel or to stores the input pattern in a memory. CONSTITUTION: A contact detection sensor(102) detects a contact between a contact tip of a portable terminal and the surface of an object. A motion recognition sensor(104) recognizes a movement pattern of the contact tip. A pattern extraction block(106) extracts an input pattern from the recognized movement pattern. If the total size of the extracted input pattern is bigger than the size of a display panel, a pattern ratio determination block(108) determines a corresponding pattern reduction rate. A pattern size adjustment block(110) reduces the size of the input pattern according to the determined pattern reduction rate. [Reference numerals] (102) Contact detection sensor; (104) Motion recognition sensor; (106) Pattern extraction block; (108) Pattern ratio determination block; (110) Pattern size adjustment block; (112) Pattern storage block; (114) Memory; (116) Screen movement control block; (118) Display block
Patent KR-20130062595-A (KR)
Title: Lighting device
Inventor: KIM JAE JIN
IPC: F21V29/00
Filed: 2011-12-05
Abstract: PURPOSE: A lighting device is provided to be able to electrically connect by separating an optical source section and a driver, facilitate the assembly, and be able to improve the efficiency of heat radiation and light. CONSTITUTION: A lighting device comprises a radiator(6000), a driver(5000) arranged on the radiator, a surrounding heat pipe(6800) arranged on a side part of the radiator and on the top of the driver, and an optical source section(400) arranged on the heat pipe.
Patent KR-20130065386-A (KR)
Title: Electrolyte for lithium air rechargeable battery and lithium air rechargeable battery using the same
Inventor: CHOI NAM SOON
IPC: H01M12/06
Filed: 2011-12-09
Abstract: PURPOSE: An electrolyte for a lithium air battery is provided to improve reversibility of an electric chemical reaction by oxide decomposing lithium peroxide generated from an air electrode. CONSTITUTION: An electrolyte for a lithium air battery comprises a compound represented by chemical formula 1, compound represented by chemical formula 2, or a combination thereof; and a lithium salt. In chemical formula 1 and 2, X is B, Al, Ga, or In; each of R^1 - R^3 is a substituted or unsubstituted C1-20 alkyl group, substituted or unsubstituted C6-30 cycloalkyl, substituted or unsubstituted C6-30 aryl or substituted or unsubstituted C6-30 heteroaryl; each of R^4 - R^6 is substituted or unsubstituted C1-20 alkyl, substituted or unsubstituted C6-30 cycloalkyl, substituted or unsubstituted C6-30 aryl, substituted or unsubstituted C6-30 heteroaryl, or a functional group represented by chemical formula 3.
Patent KR-20130066293-A (KR)
Title: Microfluidic chip for extracting nucleic acid, device comprising the same, and method for extracting nucleic acid using the same
Inventor: KIM SUNG WOO
IPC: C12M1/00
Filed: 2011-12-12
Abstract: PURPOSE: A microfluidic chip for isolating nucleic acids, an apparatus for isolating nucleic acids with the same, and a method for isolating nucleic acids using the same are provided to ensure microminiaturization and high speed, and to maintain and improve isolation efficiency with reliability. CONSTITUTION: A microfluidic chip for isolating nucleic acids is used for isolating nucleic acids from a biological sample. The microfluidic chip comprises an inlet part(10), a heating part(20), a first filter(30), a nucleic acid isolation part(40), a second filter(50), and an outlet part(60). The heating part is placed at a first channel region connected to the inlet part and is implemented to transfer heat to the biological sample. The first filter is placed at the second channel region connected to the heating part. A material with a size corresponding to a nucleic acid is able to pass through the first filter. The nucleic acid isolation part is placed at a third channel region connected to the first filter and has a nucleic acid binding material(45) which specifically binds to a nucleic acid. The outlet part is connected to the second filter.
Patent KR-20120013218-A (KR)
Title: Insulation board and lng storage tank having the same
Inventor: BAE JUN HONG
IPC: F17C3/04
Filed: 2011-12-12
Abstract: PURPOSE: An insulating board and an LNG tank comprising the same are provided to prevent cracks on a welded part by protecting an impact absorbing plate from welding heat and preventing an aluminum material from melting. CONSTITUTION: An insulating board(100) comprises lower insulating boards(110), first and second auxiliary barriers(120,122), an upper insulating board(140), and a connecting board(150). The lower insulating boards are arranged in inner hull(1) at regular intervals. The first auxiliary barrier is installed on the lower insulating board. The upper insulating board is formed in a shape of rectangular parallelepiped, which has a smaller area than that of the lower insulating board. The upper insulating board is installed on the first auxiliary barrier. The second auxiliary barrier is installed on neighboring lower insulating boards. The upper insulating board and the connecting board comprise an impact absorbing plate(160) between an insulating member(142) and a protecting plate(141) for the insulating member, respectively.
Patent KR-20120132612-A (KR)
IPC: C08L7/00
Filed: 2011-12-13
Abstract: 높은 감쇠 성능을 갖는 데다가 신규 제조 시의 강성이 낮기 때문에 출하 전에 변형의 이력을 가하는 작업을 할 필요가 없는 고감쇠 부재를 제조할 수 있는 신규한 고감쇠 조성물을 제공한다.   
베이스 폴리머로서 총 질소 함유율이 0.3 질량% 이하인 탈단백 천연 고무를 사용하고, 상기 탈단백 천연 고무 100 질량부당 100 질량부 이상 170 질량부 이하의 비율로 실리카를 배합했다.
Patent KR-20130068344-A (KR)
Title: Method and apparatus for on-line checking continuous casting facilities
Inventor: KANG SHIN EON
IPC: B22D11/16
Filed: 2011-12-15
Abstract: PURPOSE: A method and an apparatus for monitoring continuous casting facilities through an on-line network are provided to supply roll state information to workers by automatically measuring the roll of a strand at every starting point. CONSTITUTION: A method for monitoring continuous casting facilities is as follows: a step of loading a dummy bar where a roll monitoring device body is installed on a dummy bar car; a step of operating a data logger with a moving start signal of the dummy bar car after releasing the coupling of an auto-joint coupled to the roll monitoring device; a step of storing and analyzing data measuring roll states after the data measuring the roll states is wirelessly transmitted to a host computer by an auto-joint coupling signal; and a step of transmitting the analyzed data to a server to search the data on the web. [Reference numerals] (AA,BB) Wireless transmission
Patent KR-20130082774-A (KR)
Title: Optimization system for logistics position
Inventor: SONG BYUNG JUN
IPC: G06Q10/08
Filed: 2011-12-19
Abstract: PURPOSE: A cargo owner-oriented distribution optimization system is provided to draw an optimal route for transportation, estimate the distribution costs of the route once the transportation is completed, and estimate necessary time and carbon emission when environmentally friendly transportation is used. CONSTITUTION: Into an optimization module and a simulation module, information about a center, a destination, a region, the quantity of goods (order information), and a vehicle is input. After constraints are set, routes are generated by geocoding. First to Nth routes are provided through an interface manager after the generation of the routes. After a simulation process considering the number of vehicles, the number of rotations, and total travelling distance, feedback is provided. In case of a new client company, a change in an operating environment is predicted; the existing regions for transportation are examined; and an optimum region is appointed. In case of an increase or decrease in the transportation amount of the existing clients, a change is predicted and the suitability of a new distribution point is examined. [Reference numerals] (AA) Input; (BB) Center; (CC) Distribution destination (Customer); (DD) Region; (EE) Transportation amount (Order information); (FF) Vehicle; (GG) Simulation; (HH) Setting of contract conditions; (II) Geo-coding; (JJ) Optimization algorithm objective function; (KK) Creation of a route; (LL) Adjustment of regions; (MM) Change/addition of vehicles; (NN) Change/addition of centers; (OO) Adjustment of contract conditions; (PP) Interface; (QQ) First time; (RR) Second time; (SS) Analysis; (TT) Result analysis (Number of vehicles, Number of rotations, Total traveling distance, Costs); (UU) Determination; (VV) Prediction of changes in the prior operating environment for sales business on a new client; (WW) Prediction of changes according to the increase/decrease in transportation amounts of the existing clients; (XX) Evaluation of the existing regions and designation of an optimum distribution region; (YY) Examination of the suitability of a new distribution point
Patent KR-20130070926-A (KR)
Inventor: SEO JI HYUN
IPC: G11C16/34
Filed: 2011-12-20
Abstract: PURPOSE: A nonvolatile memory device and an operation method thereof are provided to improve the threshold voltage distribution properties of memory cells in a program operation by controlling a bit line voltage. CONSTITUTION: A memory cell block(110) includes memory cells connected to even and odd bit lines. A page buffer unit(120) includes a plurality of page buffers respectively connected to the even and odd bit lines. A control unit(150) controls the page buffer to change a voltage applied to a bit line of a first memory cell into a correction bit line voltage within a program allowable voltage when a program prohibition voltage is applied to a bit line of a second memory cell by completing the program of the first memory cell and the adjacent second memory cell. [Reference numerals] (130) Comparison unit; (140) CAM cell unit; (150) Control unit; (160) Voltage providing unit
Patent KR-20130071100-A (KR)
Title: Apparatus and method for projection image into three-dimensional model
Inventor: HEO SANG HUN
IPC: H04N5/74
Filed: 2011-12-20
Abstract: PURPOSE: A device for projecting an image on a 3D model and a method thereof are provided to project various images on the 3D model and display the same by detecting geographic information for depth and a shape of the 3D model, thereby manufacturing dynamic animation environment. CONSTITUTION: A control computer(60) stores a lot of image information which is projected on a 3D model(10) through an image projector(30). The control computer converts photographing data of the 3D model inputted from a 3D camera(20) into a geographic information color. When the amount of change between the photographing data and previously stored photographing data exceeds predetermined reference data, the control computer generates a unit corresponding to geographic information for depth and a shape of a position and projects an image including the converted color and the unit on the 3D model through the image projector. [Reference numerals] (60) Control computer
Patent KR-20130073700-A (KR)
Title: Organic compound and organic electroluminescent devices using the same
Inventor: KIM YOUNG BAE
IPC: C07D401/10
Filed: 2011-12-23
Abstract: PURPOSE: A compound is provided to ensure heat resistance, hole injecting and transporting performance, and light emitting performance, and to be applied to one or more among a hole injection layer, a hole transport layer, a phosphorescent and fluorescent host of a light emitting layer, and a dopant. CONSTITUTION: A compound is denoted by chemical formula 1. An organic electroluminescent (EL) device comprises an anode, a cathode, and one or more organic layers inserted between the anode and the cathode. At least one of the organic layers contains the compound. The organic layers are selected from the group consisting of a hole injection layer, a hole transport layer, and a light emitting layer. The compound is used as a phosphorescent host and a fluorescent dopant of a light emitting layer.
Patent KR-20130073739-A (KR)
Title: Segment for continuous casting
Inventor: HAN BYEONG HA
IPC: B22D11/12
Filed: 2011-12-23
Abstract: PURPOSE: A saw zone vendor segment for the continuous casting is provided to prevent the phenomenon of the roll alignment being distorted, which is able to be generated between the adjacent bottom frames. CONSTITUTION: A saw zone vendor segment for the continuous casting comprises a fixed frame (110), a fluid frame, a roll gap adjustment member (130), and a buffer member (140). An integrated fixed frame includes a plurality of guide roll as one body. A plurality of fluid frame is connected to the integrated fixed frame and controls the roll gap. The roll gap adjustment member moves the fluid frame to forward and backward, and provides the roll gap to be adjusted. The buffer member is installed by being connected between the integrated fixed frame and the fluid frame, and buffers the roll gap fluid which is generated when the slab moves.
Patent KR-20130012536-A (KR)
Inventor: KIM DAE CHUL
IPC: C09J183/04
Filed: 2011-12-27
Abstract: PURPOSE: A curable polyorganosiloxane composition is provided to have excellent adhesion and moisture resistance while maintaining high transmittance to both sides of a metal and thermal resistant plastic. CONSTITUTION: A curable polyorganosiloxane composition comprises polyorganosiloxane, polyorganohydrogensiloxane, a platinum catalyst, and a silane compound represented by chemical formula 1 or chemical formula 2: (X)_a(R_4)_b(R_5)_cSiO_(4-a-b-c)/2. In the chemical formulas, each of R1-R3 is a C1-10 alkyl group or C1-10 alkoxy group, at least one of R1-R3 is the C1-10 alkoxy group, m is an integer from 1-10, each of R4 and R5 is the C1-10 alkyl group or C1-10 alkoxy group, R4 and/or R5 is the C1-10 alkoxy group, X is a C1-5 alkyl group substituted by a glycidoxy group, and 0.1<a≤0.9, 0.01<b≤0.7, 0.1<c≤1.9, and 0<a+b+c<4.
Patent KR-20130077017-A (KR)
Title: Method of liquid composition comprising cyclodextrin with improved turbidity
Inventor: CHO KYOUNG HEE
IPC: C08B37/02
Filed: 2011-12-29
Abstract: PURPOSE: A manufacturing method of a liquid composition containing cyclodextrin is provided to hardly generate white turbidity, to be able to manufacture a liquid composition containing cyclodextrin with the cyclodextrin content of at least 15 weight% or more based on the total saccharides weight, and to be able to be used for cyclodextrin saccharified liquid obtained from the starch with the amylopectin content of less than 90%. CONSTITUTION: A manufacturing method of a liquid composition containing cyclodextrin with the reduced white turbidity comprises the following steps: (a) a step of obtaining saccharified liquid containing cyclodextrin by treating starch suspension or starch liquefaction liquid with clyclodextrin glycosyltransferase; (b) a step of obtaining hydrolysate liquid containing cyclodextrin by treating the saccharified liquid containing cyclodextrin with starch hydrolysis enzyme; and (c) a step of purifying with ion by injecting the hydrolysate liquid containing cyclodextrin into an ion exchange resin column and passing. The hydrolysate liquid containing cyclodextrin has 15-35 of the Dextrose equivalent (DE) value of the whole saccharides, and 15% or more of the cyclodextrin content based on the whole saccharides peak area shown in the liquid chromatography. The pH of the hydrolysate liquid containing cyclodextrin is adjusted to 4.5-11 before being injected into the ion exchange resin column. The ion exchange resin column comprises a column charged with cation exchange resin and a column charged with anion exchange resin, and is maintained at 45-70deg.C when passing the hydrolysate liquid containing cyclodextrin.
Patent KR-20110033853-A (KR)
Inventor: JOERNEUS LARS
IPC: A61C13/263
Filed: 2009-07-10
Abstract: 분리형 치과 임플란트의 고정체(3)가 개시되며, 이는 뼈 길이를 갖고 최대 외경을 갖는 나선형 나사산(31)을 포함하는 제 1의 근첨 부분(30); 제 1의 근첨 부분(30) 맞은편에 배치된 최상부(32); 외과 도구 및 보철 구성요소 중 적어도 1 이상을 착탈식으로 수용하는 암나사산 공동(33); 및 연조직(70)으로의 침착 및 결합 조직 부착을 위해 고안된 제 2의 관상 부분(34)을 포함하고, 상기 제 2의 관상 부분(34)은 연조직(70)의 층 두께보다 더 얇게 고안되는 상기 치과 임플란트(3)의 길이방향으로의 연장부를 가지며, 상기 최대 외경에 대한 상기 뼈 길이의 비는 대략 0.8 내지 1.2의 범위 내에 있다.  또한, 뼈 조직 내에서 치과 임플란트들의 안정성을 개선하는 방법이 개시된다.
Patent KR-20110059594-A (KR)
Inventor: DIETZ JOACHIM
IPC: F01L1/34
Filed: 2009-07-21
Abstract: 본 발명은 크랭크축에 대한 캠축(06)의 위상 위치를 조정하기 위한 캠축 조정기(01), 특히 유압 캠축 조정기에 관한 것이다.  캠축 조정기 내에 제공되는 캠축 지지부는 본 발명에 따라 롤러 베어링(22)으로서 구현된다.
Patent KR-20110039468-A (KR)
Inventor: DICK CHRISTOPHER H
IPC: H04B7/08
Filed: 2009-04-29
Abstract: 시스템은 다수의 송신 안테나(102)로부터 다수의 수신 안테나(104)로 전달된 심볼들을 검출한다.  평가기(108)는 수신 안테나에서 수신된 신호의 SNR을 추정한다.  평가기는 SNR이 문턱값(114)보다 낮은 것에 응답하여 제1 검출기(110)를 인에이블하고, 평가기는 SNR이 문턱값(114)보다 높은 것에 응답하여 제2 검출기(112)를 인에이블한다.  제1 검출기는 바람직하게 K 베스트 검출기이고, 제2 검출기는 바람직하게 ML 깊이 우선 스피어 검출기이다.  제2 검출기는 제1 검출기보다 낮은 비트 에러 레이트를 갖는다.  제1 검출기의 계산 복잡도는 일정한 반면에, 제2 검출기의 계산 복잡도는 높은 SNR에서 더 낮고 낮은 SNR에서 더 높다.
Patent KR-20110044776-A (KR)
Title: Cell phone detector for washing machines
Inventor: LAUER CARL J
IPC: G06K17/00
Filed: 2009-08-03
Abstract: PURPOSE: A mobile phone detector for a washing machine is provided to detect a cellular phone within the washing machine using a detector and an alarm device. CONSTITUTION: An antenna(33) is attached to a washing machine and receives radio frequency signals from the inside of the washing machine. A detector(44) is combined with the antenna in order to be operated and detects radio frequency signals. An alarm device(35) is combined with the detector in order to be operated and receives a signal from the detector, and provides a radio frequency signal detecting alarm.
Patent KR-20110059775-A (KR)
Inventor: MUNDINGER GERD
IPC: F02C7/06
Filed: 2009-11-17
Abstract: 장치 (D) 는 윤활유를 수용하는 베어링 하우징 (10) 을 밀봉하는데 쓰이며, 상기 베어링 하우징으로부터, 하우징 내부에 지지되어 있는 배기가스 터보차저의 회전자 (2) 는 질량흐름의 작용을 받는 차저의 압축기 하우징 안으로 안내되어 있다.     상기 장치는 벽 연장부 (40) 를 가진 고정식 칸막이벽 (4), 회전자 (2) 의 샤프트 (2) 에 고정되어 있는 실링 디스크 (5), 상기 실링 디스크 (5) 와 상기 벽 연장부 (40) 사이에 배치된 분리 갭 (7), 및 오일 수집 채널 (42) 과 연결되어 있는 드립 장치 (8) 를 포함하며, 상기 드립 장치는 상기 오일 수집 채널 (42) 안에 수집된 윤활유를 중력을 이용해 오일 배출구 (13) 안으로 안내한다. 
상기 드립 장치 (8) 는 윤활유를 위한 배출면 (80) 을 포함하며, 상기 배출면은 상기 분리 갭 (7) 을 한정하는 회전하는 실링 디스크 (5) 로부터의 큰 축방향 간격 (b) 을 가진다.     경우에 따라 상기 분리 갭 (7) 안으로 침투하는 오일은 이제 상기 실링 디스크 (5) 와의 상호 작용 없이 베어링 하우징 (10) 의 오일 배출구 (13) 안으로 안내될 수 있다.     이렇게 하여, 저압에 의해 상기 분리 갭 (7) 이 석션되는 경우 조차도 (이는 예컨대 터보차저의 정지시 또는 부분부하 작동시 그러하다), 비허용 오일량이 상기 분리 갭 (7) 을 통해 압축기 안으로 흡입되는 것이 효과적으로 저지된다.
Patent KR-20110059888-A (KR)
Inventor: JIN LING
IPC: C12Q1/68
Filed: 2009-09-18
Abstract: 본 발명은 NGF에 대한 저해 활성을 갖는 압타머를 제공한다. 본 발명은 NGF에 대한 결합 활성 또는 저해 활성을 갖는 압타머 및 기능성 물질(예컨대, 친화성 물질, 표지용 물질, 효소, 약물 송달 매체, 또는 약물 등)을 포함하는 복합체; NGF에 대한 결합 활성 또는 저해 활성을 갖는 압타머 또는 상기 압타머 및 기능성 물질을 포함하는 복합체를 포함하는 의약, 진단약 및 표지제 등을 제공한다.
Patent KR-20110095265-A (KR)
Title: Method and apparatus for detrrmination of electrical welding circuit variables
Inventor: SCHMITT KLAUS GISBERT
IPC: B23K9/095
Filed: 2009-11-11
Abstract: A stud welding apparatus comprising a power supply including power electronics operable for supplying a variable welding voltage together with one of a pilot current and a welding current that is much larger than the pilot current; and a current measuring circuit operable for measuring the electrical current to the weld head; and an input circuit electrically connected between the power electronics and the power supply output, the input circuit including a first inductance, a first resistance, and a switch operable to bridge the first inductance and the first resistance; and a welding circuit electrically connected between the power supply output and the weld stud, the welding circuit having a welding circuit resistance and a welding circuit inductance, and the welding circuit inductance is much smaller than the first inductance of the input circuit; and a voltage measuring device is operable for measuring a voltage across the welding circuit.